Picture 1 is an example of bad composition because it is center and the eye is drawn to  yellow star which is in the middle and the focal point .

picture 2 is an of good composition because of variety. it creats different lines and shapes and has color 

picture 3 is an example of repition. here the balcony and window have a repititive pattern ; same shape and color

here dominance is observed the color of the shoe dominates that of the grass. when looking at this picture the eyes are drawn to the shoe. this is an example of good comoposition